Musicians changed from folk Dr. Bell to orthodox Chinese medicine, beginning with Le Song Ting, the son of Le Cailiang. Besides walking around the street like his father, Le Song Ting began to learn the classic theory of Chinese medicine and devoted himself to prescriptions and drugs to meet the needs of medical practice in big cities. After two generations of Xerox's efforts, when Xerox became famous in the fourth world, he studied medicine, and later became an official in the Imperial Hospital of the Qing Dynasty, that is, a senior medical officer in charge of imperial doctors, completing the mission of transforming into orthodox Chinese medicine and ending his ancestral career as a clock doctor.

Le Xianyang founded Tongrentang Pharmacy in the eighth year of Kangxi (1669), which was a historical starting point and laid the foundation for later development. Therefore, the Leshi family designated that year as the birth date of Beijing Tongrentang, and Le Xianyang became the originator of Beijing Tongrentang. Le Xianyang believes that "the doctor, who can preserve health and help the world, is the most important." He personally drafted the name of the hall, "Colleague, why do you use these two words?" He said: "The word' colleague' can be named Tang. I like it fair and elegant, and I need to be ambitious. "